The Challenger 5314 high-vacuum blower from National Vacuum Equipment is a 1,500 cfm high-vacuum blower designed for continuous duty at maximum vacuum. It is available in a ready-to-install hydraulic or belt-drive package using corrosion-resistant stainless steel internal components. Available packages include silencers, check valves, moisture trap, cyclone, four-way vacuum/pressure changeover valve and a powder-coated skid. 800/253-5500; www.natvac.com.